boane



(No Model.) 4 SheetsSheet 1.

W. H. DUANE & J. SOFGE.

MORTISING MAGHINE.

N0. 532,035. Patented Jan. 8, 1895.

(N0 Model.) 4 Sheets-Sheet 2.

W. H. DOANE 85 J. SOFGE.

MOBTISING MACHINE.

No. 532,035. Patented Jan. 8, 1895.

H mum %E J g 2 (No Model.) 4 Sheets-Sheet 3. W. H. DUANE & J. SOFGE.

MORTISING MACHINE. No. 532,035; Patente l Jan. 8, 1895.

(No Model.) 4 Sheets-Sheet 4.

W.-H. DUANE. & J. SOPGE. MORTISING MACHINE.

No. 532,035. Patented Jam. 8, 1895. I

UNITED. STATES PATENT Genres.

IVILLIAM H. DOANE AND JOHN SOFGE, OF CINCINNATI, OHIO, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE J. A. FAY d: EGAN COMPANY, OF SAME PLACE.

MORTlSlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 532,035, dated January 8, 1 895. Application filed December 19, 1892. Serial No. 455,648. (No model.)

To all whom it may concern.-

Be it known that we, WILLIAM H. DOANE and JOHN SOFGE, citizens of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Mortising- Machines; and we do hereby declare the following to be a full, clear, and exact descriptron of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Qur invention is an improvement in mortisln g machines and consists in the novel features of construction and combination of parts hereinafter fully described and illustrated in the accompanying drawings which show one form in which we have conte1nplated embodying our invention, and said invention is fully disclosed in the following description and claims. I

Our invention relates particularly to chisel reversing mechanism for mortising machines and said mechanism is herein shown in connection with a inortising machine having a graduated stroke.

Referring to the said drawings, Figure 1 represents a front elevation of a graduated stroke mortising machine embodying our invention. ,Fig. 2 is alside elevation of the same. Fig. 3 is a side elevation of a portion of the machine showing parts of the reversing mechanism, a part of the main frame of the machine being broken away. 4 is a top plan view showing the parts of the reversing mechanism represented in Fig. 3. Fig. 5 is a front View of the parts shown in Fig. 3. Fig. 6 represents a detail view of the reversing sleeve showin gthe sheave and lockin g plate'attached thereto. Fig. 7 is an enlarged perspective View of the reversing mechanism.- Fig. 8 is a detail view of a slightly modified form of locking plate secured to the reversing sleeve.

In the drawings A represents the main frame or column of a mortising machine formed as usual hollow and provided with a supporting bed plate B to receive the work, the said bed plate having the customary adjusting devices connected therewith.

In the upper partof the frame or column A is mounted the driving shaft C provided with fast and loose pulleys c c and with a crank disk 0' adjacent to the front of the machine.

["he frontface of column A is provided with guides D which receive the slide E mounted therein, said slide being preferably dovetailed to engage the guides D. Secured to the slide E are a pair of brackets e e in which is revolubly mounted the chisel mandrel E and the slide E is also provided with suitable logs or cars e to receive one end of a pitman F which is pivotally connected thereto. The opposite end of pitman F is pivotally connected to one end of a pitman F the other end of which is connected to a crank pin 0 on the crank disk 0, the pitmen F and F forming a toggle lever jointed atfas shown in Figs. 1 and 2.

Upon a suitable portion of the frame or column A is mounted a lever G pivoted preferably on a shaft g and provided at one end with a weight g and this lever we term the weighted lever. The end 9 of said lever is connected with a treadle G located at the base of the frame by means of a rod or link 9 Secured to the weighted lever G is a depending arin G terminating in a pivot pin 9* which arm we term the graduated stroke arm. A link g connects the pivot pin g with the pivot fconnecting the pitinen F E. When the drivingshaft is revolving no motion whatever is imparted to the slide carrying the chisel mandrel until the foot lever G is depressed and the toggle lever formed by the pitmen F F straightened to a greater or less extent, by means of the graduated stroke arm G? and the link 9 It will also be seen that the depth of the stroke can thus he graduated by means of the foot lever and the parts connected therewith.

The chisel mandrel E is provided with the reversing sleeve H shown in detail in Fig. 6, the said sleeve being connected with the mandrel in such a manner as to revolve therewith but permit the vertical reciprocation of the mandrel through the sleeve. This is accomplished in this instance by providing the mandrel with a longitudinal groove 6 which is engaged by a suitable projection 72, extending into the central bore of the sleeve H as shown in Figs. 4 and '7. The sleeve H is held rigidly in position with respect to the frame of the machine and in this instance we have shown brackets h secured to the guides D and carrying a collar h which embraces the sleeve H and holds it in position while permitting it to revolve within said collar. On the lower end of the sleeve H is the reversing sheave H and on the upper end of said sleeve is the locking plate 11 by means of which the chisel mandrel may be secured in one or the other of its positions. WVe prefer for convenience to form said sleeve H, sheave H and locking plate l-l in one piece but they may be made separately and secured together if desired. The locking plate I1 is provided on its upper face with two recesses or notches h 71. diametrically opposite each other as shown in Figs. 3, 4 and 6 and at each side of the plate, the edges adjacent to said notch are formed the one higher than the other, the upper face of the plate being given a gradual incline from the high edge of one notch around to the low edge of the other. A pivoted looking lever K, pivoted at to a suitable support has one end 70 in position to engage one of the notches k and thereby lock the reversing sleeve and chiselmaudrel in one position, and a spring 70 holds the lever K in engagement with the said notch.

A reverser bar L is suitably supported to slide in the main frame and has its forward end adjacent to the locking lever K. The locking lever at this point is beveled on both sides to form a pair of cam surfaces k as shown in Figs. 3, i and 7 and the sliding reverser bar is provided with a downwardly extending lug Z having oppositely inclined edges forming a V shaped point, the said edges being adapted to engage the cam surfaces k of the locking lever K and to depress that portion of the locking lever, thereby raising the end k out of the locking notch of the locking plate and to permit the partial revolution of the chisel mandrel. When the end is of the locking lever has been lifted out of the notch of the locking plate, the lug Z'will have passed over the cam surface k of the lockinglever and will have released said lever, so that the end 70 will immediately fall upon the high edge of the locking plate adjacent to the aforesaid locking notch, motion having been imparted to the chisel mandrel and locking plate in a manner to be described presently. As the locking plate continues to revolve it will be stopped after one half revolution by the high edge of the other notch h striking the locking lever, when the said locking lever will fall into the notch 72, and the chisel mandrel will be again locked in position after having made exactly a. half revolution. Upon the driving shaft C is mounted a pulley or sheave c from which a belt or rope extends to the reversing sheave H passing around suitable idlers a. a mounted in this instance within the column A. Whenv the locking plate and sheave H are locked in position the belt or rope will slip upon the reversing sheave 1-1, but when the locking lever is raised out of the notch of the locking plate, the reversing sheave will be instantly given a half revolution when it will be stopped and locked in the manner justbefore described. We also provide devices whereby the reversing of the chisel will be rendered automatic and will be operated as the foot is removed from the foot lever G and the parts allowed to resume their normal positions, thus reversing the chisel when it is at its highest point and while it is not affected by the revolution of the driving shaft,

but remains stationary.

A vertically reciprocating rod M shown in dotted lines, Figs. 1 and 2 and in full lines, Figs. 3 and 7, is connected with and operated by the weighted lever G. In this instance we have shown the shaft g provided with a crank g to. which the rod M is pivotally connected. The lower end of said arm is provided with a gravity pawl m adapted to engage one of two downwardly inclined surfaces Z on the re verser bar L extending from a central point and terminating in shoulders Z These inclined portions are so located that one or the other will lie beneath the gravity pawl m and as the rod M descends, the said pawl m will engage one of said inclines and be moved laterally until it strikes one of the shoulders Z when it will effect the movement of the reverser bar and bringthe other inclinedsurface Z beneath the, gravity pawl so that the next downward movement of said pawl will effect a movement of the reverser bar in the opposite direction. It will thus be seen that when the foot lever G" is depressed the chisel mandrel will be reciprocated by means of the crank pin 0 and pitmen F F, the length of the stroke being regulated by the distance which the foot lever is depressed and when .the footv lever is raised so as to allow the weight g to restorethe parts to. theirnormal positions and raise the chisel into a position where it will not be actuated by said crank and pitmen, the rod M. and gravity pawl m will be loweredthereby effecting a movement of the reverser bar I... The movement of the reverser bar, as before described will liftthe locking lever out of'the notch of the locking plate and permit the chisel mandrel to be reversed.

In Fig. 8 we have. shownthe sleeve H provided with a slightly modifie -v form of looking plate in which one edge of each notch is provided with an upwardly extending lug h and the inclined faces connecting the high edge of one notch with the low edge of the other notch are dispensed with. While we have shown the rod M located within the column A and operated by acrank on the shaft g, we may if preferred securesaidrod to the weighted lever Gdirectly, outside of said column and support the. reverser bar in position to be operated therefrom ifdesired.

When the parts are in normal position and the chisel mandrel is stationary the lever end of the graduated stroke arm G should be j net in rear of the lower end of the pitmanj as shown in Figs. 1 and 2, the pin g being in line with the pin connecting the pitman F with the slide carrying the mandrel. In order to insure the graduated stroke arm being returned to the proper position by the weighted lever G a stop N is provided on the face of column A in the path of the arm G which will limit the return movement of the arm and stop it in the required position so that no motion will be imparted to the chisel mandrel from the driving. shaft. In order to prevent jar when the arm G is returned to its normal position the stop N is provided with a cash ion 72. of rubber, leather or other suitable material, as shown.

We do not desire to be limited to our exact details of construction as variations may be made therein without departing from the spirit of our invention.

What we claim, and desire to secure by Letters Patent, is-- 1. In a mortising machine the combination with the chisel mandrel and graduated stroke mechanism therefor, of the reversing sheave and locking plate secured to revolve with the said mandrel, means for rotating said sheave continuously in the same direction, the looking lever engaging said locking plate and holding said sheave and mandrel against rotation, the sliding reverser bar for operating said locking lever to release said locking plate, and devices connected with the graduated stroke mechanism for moving the reverser bar, substantially as described.

2. In a mortising machine the combination with the chisel mandrel and graduated stroke mechanism therefor, of the reversing sheave and locking plate engaging and revolving with said mandrel, means for rotating said sheave continuously in the same direction, the pivoted locking lever for engaging said locking plate, provided with inclined surfaces, the sliding reverser bar having a part for engaging the inclined surfaces of said locking lever, and devices connected with said graduated stroke mechanism for operating said reverser bar, substantially as described.

3. In a mortising machine the combination with the chisel mandrel and graduated stroke mechanism therefor, of the reversing sheave and locking plate secured to revolve with said mandrel, said plate being provided with vertically notched portions, a pivoted locking lever for engaging the notched portions of said plate, said lever being provided with oppositely inclined cam faces, a sliding reverser bar having a part adapted to engage said cam faces of the locking lever, and devices connected with said graduated stroke mechanism for moving said reverserbar in opposite directions alternately, substantially as described.

at. In a mortising machine the combination with the chisel mandrel and graduated stroke mechanism therefor, including a weighted lover, of reversing mechanism for said mandrel comprising the reversing sheave and locking plate secured to revolve with said mandrel, said locking plate having its upper face provided with diametrically opposite notches, a locking lever for engaging one of said notches provided with cam surfaces, the reciprocating reverser bar having a part for engaging said locking lever and a rod connected with said graduated stroke mechanism provided with a gravity pawl for reciprocating said reverser bar, substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

WILLIAM H. DOANE. JOHN .SOFGE. Witnesses:

E. S. PASSEL, H. S. SPENCER. 

